Crude surge, US data eyed as Sensex, Nifty slip for third day

In a volatile session, the 30-share BSE benchmark Sensex declined by 241.30 points, or 0.31 per cent, to settle at 77,378.91. The NSE Nifty dropped by 95 points, or 0.40 per cent, to 23,431.50 on Friday.